CURRENT Discussions:

BSC Review:

J1. Introduction

Linear scale may be expressed: 

a) as a representative fraction 

b) in words, as a verbal scale statement, giving map distance in relation to Earth distance or vice versa 

c) graphically, using line or bar scales (see Figure J1), demarcation of parallels of latitude, or defined linear distances (e.g., radial distance or grid squares).

This list, formatted with lowercase letters, ends with a period at the end of the final list item (c). However, similar lists elsewhere in DCRM(C) formatted with lowercase letters do not end with a period (see 0C2.3; 5B2.2; 7B19.2). Both list items in 0C1.1 end in periods. Each list item in 0C1.3, 0C2.2, 3A3.2, 3B1.7, 5B7.6, Q2 ends in a period, but each item is also an instruction.

J.2.4. Determination of the representative fraction by means of comparison with a map of known scale (comparison method)

The accuracy of the calculation depends to a large extent on:

a) the scale of the map of known scale on which a distance is measured

b) the projection of that map and the map of unknown scale

c) the location and direction from which distances are measured.

This list, formatted with lowercase letters, ends with a period at the end of the final list item (c). However, similar lists elsewhere in DCRM(C) formatted with lowercase letters do not end with a period following the final list item (see 0C2.3; 5B2.2; 7B19.2). Both list items in 0C1.1 end in periods. Each list item in 0C1.3, 0C2.2, 3A3.2, 3B1.7, 5B7.6, Q2 ends in a period, but each item is also an instruction.

LSC: You've got to be kidding!  I do not think this is worth arguing over.  If anything, I would end none of the lists with a period, but really!  12/21/2015 

TF: I'll leave this to the Grammar Police. 12/26/15 

MT: Deleted period at end of lettered lists in J1 and J2.4. Also deleted period at end of 1st entry in lettered list in 0C1.1 (but not 2nd one because it is an abbreviation). Although not noted by reviewer, also made first word in each entry in 0C1.1 lower-case to match C2.3; 5B2.2; 7B19.2, J1, J2.4. Left periods at end of entries in lettered lists at 0C1.3, 0C2.2, 3A3.2, 3B1.7, 5B7.6, Q2 because they are full sentences.  1/1/16

J.4.1.footnote 33

Calculations based on Dictionnaire Universel des Poids et Mesures (values for perche de l’arpent de Paris) indicate that 6.3945 yards is correct, therefore, 19.1835 feet should be the correct figure. 

Possibly prefer a semicolon preceding therefore? “yards is correct; therefore, 19.1835”

LSC:  No, you are joining two independent clauses.  If "therefore" were not present, you would want a semicolon.  You might even argue that the comma after "therefore" is unnecessary, but I am not sure. 12/21/2015

TF: See my comment above. 12/26/15

MT: I only have the 14th ed. of Chicago Manual of Style here at home, not the most recent ed., but it says under 5.90 that "therefore" is considered an adverb rather than a conjunction and should be preceded by a semi-colon when used transitionally between clauses of a compound sentence (ditto for: then, however, thus, indeed, etc.). It also says the word is usually followed by a comma (although the comma may be omitted if there is no risk of misreading and a pause is not desired). So, I will change the comma preceding "therefore" to a semi-colon. I'll leave the 2nd comma as is, since I think I would use a pause at that point if reading aloud. 1/1/16

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